Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Front Derailleur with 38.2 clamp for a 3x9 speed.

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Front Derailleur with 38.2 clamp for a 3x9 speed.

Old 10-09-15, 07:27 PM
Thread Starter
Join Date: Jul 2015
Posts: 68
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Front Derailleur with 38.2 clamp for a 3x9 speed.


I am just asking a quick question.. so have anyone know if there is a front derailleur with 38.2 clamp and 3x9 speed that exist in any shop? because i was able to find most of front derailleur with 38.2 for a 3x10, but not 3x9. the problem is i dont know if the 3x10 front derailleur could work with a 3x9 setup. i am also aware of the chain for a 9 speed is a bit more wide than 10 speed chain. well excuse my foul word.. i think that the world of mountain bike is really FU*KED UP but much more worse than i thought. so it won't be easy to find the right front derailleur. *sigh* if this offended you, then i apologized for my foul word.

so i will be waiting to hear from your reply and questions if you have some. i would appreciate your help on this matter. thanks in advance.
Cyclist0103 is offline  
Old 10-09-15, 07:43 PM
Senior Member
Andrew R Stewart's Avatar
Join Date: Feb 2012
Location: Rochester, NY
Posts: 17,690

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4031 Post(s)
Liked 3,458 Times in 2,097 Posts
38.2??? That's almost as big as 60_tooth_ring's thighs. Andy. who is having fun with another poster, hope he understands...
Andrew R Stewart is offline  
Old 10-09-15, 07:49 PM
Senior Member
CliffordK's Avatar
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,588
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18043 Post(s)
Liked 4,350 Times in 3,250 Posts
I assume that is on an MTB.

II think the 9 and 10 speed derailleurs are similar (front and rear), so I'd try the 3x10.
CliffordK is offline  
Old 10-09-15, 09:43 PM
Senior Member
Join Date: May 2011
Location: Upstate NY
Posts: 3,794

Bikes: Bianchi San Mateo and a few others

Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 634 Post(s)
Likes: 0
Liked 13 Times in 9 Posts
The three common diameters for seat tubes, and thus front derailleur clamps, are:
  • 28.6 mm, common on steel frames
  • 31.8 mm
  • 34.9 mm

9-speed and 10-speed front derailleurs are available in all three sizes. Some front derailleurs, like the Shimano Altus M370 and M371 models, come with shims so the same one will fit any of the three common seat tube sizes.
SkyDog75 is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
11-07-16 02:22 PM
Tandem Cycling
11-07-13 05:14 PM
Bicycle Mechanics
05-03-12 03:22 PM
Classic & Vintage
01-14-12 12:45 PM
Bicycle Mechanics
02-26-11 11:41 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.